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8*x*((3/4)*x+1/2)^5 = 0
8*x*(3/4*x+1/2)^5 = 0
( 3/4*x+1/2 )
3/4*x+1/2 = 0 // - 1/2
3/4*x = -1/2 // : 3/4
x = -1/2/3/4
x = -2/3
( 8*x )
8*x = 0 // : 8
x = 0
x in { -2/3, -2/3, -2/3, -2/3, -2/3, 0 }
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